North Korea unleashed a verbal onslaught at U.S. leader Donald Trump on Saturday, blasting him as "a warmonger" who "begged for a nuclear war," in Pyongyang's first official comments on his ongoing visit to Asia.

"Trump, during his visit, laid bare his true nature as destroyer of the world peace and stability and begged for a nuclear war on the Korean Peninsula," the state-run Korean Central News Agency quoted an unidentified Foreign Ministry official as saying.

Pyongyang conducted its largest nuclear test to date in September and has test-fired dozens of missiles this year, including some thought capable of striking the mainland United States.